Overseaming-machine.



A. H. DE VOE. OVERSEAMING MA APPLICATION FILED OCT. 30. 1912'.

CHINE.

Patented Nov. 23,, 15915;

2 SHEETSSHEETI WITNESSES:

ATTORNEY A. H. DE VOE. OVERSEAWHNG MACHINE. APPLICATION man OCT. 30. 1912.

2 SHEETS-SHEET 2- WITNESSES.

A I TUBA/EV Patentefl Nov" 23 M5.

ALBERT H. be V oii f or WEST-FIELD: New

IOfl T11 JERSEY, As'smnon vmam]; SmGER J 'FACTURINGY COMPANY. A CORPORATION 01? NEWJERSEY.

" f oirERsEA1v11NG-MAcHInE.-

To all whom if may rom'cr'n: v

lie -1t known that I,- Mainu'r H. DE Von, acitizen of the l mted States, residing at iesttield. in the county of Union and State of New Jersey, have invented certain new and useful lmprovements m Overseauung- 'h'iachiues, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to'an improvement in orerseauiingamt-limes. and especially to such uuu-h'ines used to apply an overseanr binding 'to the edges-of tahrics having' curred outlines such, for instance, as the soles of. Japanese tabis. j The invention has for its-object to main- 7 ta-in ett'ecti 'e control of the 'workfand inv cured by means i with. the- 1am at seaming sewing machine employing sure uniformity of the ing around curves, and more particularly to insure the turning of the work upon the needle solely as a fulcrum In its preferred embodiment, the inipr'ovementis applied to'that class of over- I a rec procating and laterally jogging needle with suitable feeding mechani-sim and it is seof apresser-foot and automatically acting liftingmeans therefor p'e-- riodically 'inetl'ective in performing its lifting movements during the production of one or more stitches of a series'or group.

a In its broader aspect, the improvement ;is

' '..connecte d parts; I

: ,Thebracket-arm is providedupon it evidently applicable to "machinesofanykind' wherein means are provided for pro-.

du'cing relativelateral jogging movements -bet\\feen the stitch-forming mechanism and- ,the work.

' In the accompanying drawings, Figure 1 is a side 'elevatmmw-ith' the' frame partly in section, of 3, Singer overseaming-sewing machine embodylng the present improvement, of the same;

and -'-Fig. 2'a'front end. View bed-plate in section." Fig, 3 is: a perspectiveview and 4 asectional plan the'upper feeding and scale than] the -'preeding figures.

a larger M 5181a perspective v ew of thelpres'sen ha r; fulelun block.

elevation ofdetached. Fig. 'G' is an the. actuating means .for the fnpper feeding mechanis y ","lll'he frame is onstructed withthe usual Specification of Letters Patent.

overseam in stitch- I presser-foot the former being uppn 2-" The stud-screw 37 is. secured in posi- {The rock-shaft I v Patented Nov. 23.1915. Application filed October 30. 1912. serialrrbivzasasQ I I mina tin'g' in thehollow head 4 and having journaled therein the ma'inshaft 5 the balance-wheel 6. f

I well known manner is thejogging needlerocatiug needle-liar 8 carrying the'needle 9. The needle-bar has'fixed. thereon the usual collar 10 carr 'mg a lateral stud 11 'slidinglv "connected. with one end of the pitman 1:2:-

whose opposite end s connected with the usualjcrank-pin carried liy the take-up camcylinder 13, the lower end, ot' the link 1-,}. h i lug providedwith a torwardly projecting lug ltreciprocat ing within a slot 15 in the guide-bar. 16' secured to the bracket-arm head; v i

- The needle-bar means of the screw .18 one. end of the pitman 19 whose opposite end is adjustably se-' cured by means, ot the screw '20 and nut .21-

frame carriesthe forked lug 1'! to which ispivotally connected by.

arm 22- carries the stud 25 entering the camslot 26 in thedisk. 3T .lprovidedwiththe beret-wheel 2S meshing with the bevel wheel fixed upon the main-shaft -5, as ;represented in dotted lines in Fig. 1'. {lat eral jogginguiovements are thus imparted tothe needle through the cam-disk 22-7 and rearward 'si'de with arms 30' and 31*each carryinga center-screw 32 :upon which is the maln-shattand carrying at its rearward end the depend ng crank-arm 31L pivotgilly connected by HIGHES of thescreW -holt end carries the stud-screw 37 whose head is l-fitted withln the segmental-groove .38 ot'a dependingarm 39 ot' the-rock-shaft 40 journaled inbearing lugs 41 upon the standardtion upon "the arm. 39 means of'the "'clamp nut. -12 in a manner well-known.

40 has an upwardlyextending arm 43 whose ba'ckwardly offset and forkedextremity- 43' carries a transverse pin maintained incontact relation with the actuating cam 46 upon the main-shaft! by -means of the spring 47 having onev end conwith one end of a pitman 36 whose opposite journaled the rock-shaft 33 parallel with t-t"'upon'which is mounted the-roller 45.

nected with the arm 13 and the other end attached to the pitman 36. Through the means just described'the upper feed rock shaft 33 receives its operative movement's.

Fixed upon the opposite end of the rock- 'shaft 33 from the arm 31 a depending arm 48 having a forwardly offset portion 18' in which is swiveled the guide-block 19 having in its forward face the transverse guidechannel 50 and provided with the superposed cap 51. Y

Journaled to slide in said channel is the swinging feed-bar 52 pivotally mounted at its upper end by means of the stud-screw 53 entering a threaded transverse aperture 51 of the fulcrum-block 55 which is provided with a second aperture 56 entered by the presserbar 57' to which it is secured by suitable means, such'as a set-screw. To the reduced and slotted lower endportion of the feedbar 52 is adjustably secured by means of the screw 58 the shank 59 ,of the feeding foot 60 formed with serrated lower face and an-,

crumed upon the pin 67 sustained by thebearing lug 68 upon the top of thebracketarm. Intermediate its ends the lifting lever has pivotally attached thereto by means of the pin 69v the forked upper end 70 of a plunger-rod 71 journaled in the bearing boss 7 2 upon the top of the bracket-arm and having mounted in its forked lower end by means of the pin 73 the roller 71 resting upon the presser-lifting cam 75 fixed upon the main-shaft 5. The cam 75 is timed to liftthe presser-bar. and hence the feeding foot 60, after each feeding movement.

Journaled in suitable bearing members 76 and 77 of the face-plate 78 secured to the head of the bracket-arm is the auxiliary presser-bar 79 having fixed the eon the collar 80 (Fig. 3) between which and the bearing member 77 (Fig. is interposed the spring 81 for forcing the presser-bar 79 normally-downward. Secured upon the lower end of the presser-bar 79 by means of the setscrew 82 is a block 83 having an upwardly extending rigid arm 81 carrying the screwstud 85 affording a fulcrum for the swinging lever 86 having secured to its transversely channeled lower end by means of the fasten- .ing screw 87 the shank 88 of the presserfoot 89. I

The lever 86 has secured Within a socket at one edge by means of the screw 90 a straight avire spring 91 whose opposite end rests againstthe inturned endof a guide-plate 92 carried by the block 83 and having at the opposite edge of the lever 86 an inturned lip 93 provided with an adjustable stopscrew 9st whose point is adapted to engage the adjacent edge of the lever 86 and provided with a jam-nut 95. The. auxiliary presser-lever 86 is thus'adapted to yield lat,- erally"to enable the presser-foot 89 to follow the feeiding movements of the feeding foot (30 and to spring back into normal position in contact with the stop-screw 91 when the auxiliary presser-bar is lifted.

The block 55 carries a forwardly projecting fulcrum-stud 90 entering an aperture in the outer extremity of the lateral arm97 of .an angle-lever having the depending arm 98 formed at'itslower end with a transverse socket in which it is adjustably secured by means of set-screws 99 thepin 100 carrying the t'ap'pet piece 101 adapted to be engaged periodically by means of the stud 102 secured by means of the screw 103 upon an arm 101 secured by means of fastening screws 105 upon the edge of the needle-bar frame 7 and partaking of the j og ing movements of the latter. The angle-lever 97 98 carries at the junction of its arms a stud 10G upon which is fitted the slide-block 107 cmbraced by the forked outer end 108 of a rigid arm 109 projecting from a sleeve 110secured by means of set-screws 111 upon the auxiliary presser-bar 79.

From the foregoing it will be understood that the formation of each stitch is succeeded by a feed movement which occurs when the needle is out of the fabric, and that when the needle is actuated to form the depth or lefthand stitch. the tappet 101 carried by the angle-lever 97. 98, is in contact with the stud 102carried by the jogging needle-bar frame 7, and when the presser-bar 57 is moved vertically by the cam 75 carried by the mainshaft 5, the presser-foot S9 is given a like movement. but when the needle is actuated to form an edge or right-hand stitch the angle-lever 97, 98. is free to be rocked on its pivot stud 106. thus permitting the spring 81 to hold the presser-fcot 89 in effective relationship with the fabric. The presser-foot 89 is thus held down upon the fabric except when the needle is forming a depth stitch, and the presser-foot actuating mechanism is timed to give to said presser-foot vertical movements only when the needle is in the fabric in the fo'rmation of a depth stitch, making of the needle a fulcrum about which the fabric is turned when itis desired to effect a seam of curvilinear design.

As represented in the drawings, the faceplate 78 is formed with a slot to receive the angle-lever 97, 98, and with an outwardly extending guide flange 112, While the re- Mamet duced opposite marginal portion of the face plate has secured thereon, by means oftionary part-.118 of the hollow head 4,. -to

' hold the parts carried by the fulcrum-block against axial movement, and the lug 119- forming apart of the fulcrum-block carries a bracket 120 to which is secured, by screws as 121, the tension-releasing finger, 122 which acts to separate the thread-tension disks123,

123, when moved upward by the action of the cam portion121, of the presser-lifting lever 125, on the lug 119.

The under four-motionfeeding' mecha- -'nisn herein employed is the same as is com- 2o mon to earlier sewing machine construe tions,and as it has no particular bearing on 1 v the present invention reference will be made only to the most important elements.

126 represents the feed-dog mounted on the feed-dog-carrying bar 127 pivotally connected at one end with the feed rock-shaft 128 which in turn is operatively connected by a rod129 with'the feed-cam 130 carried by the main-shaft 5, thus transmitting feed so movements from the latter to thefeed-dog.

131 represents the feed-lift rock shaft provided at its rear end with a crank-arm 132 carrying a roller 133 which coacts with a cam-disk 13 1 to give movements to the rockshaft 131 and parts carried by it, the opposite end of the shaft 181 being provided with a crank-arm 135 carrying a roller 136 which acts on the under side of the free end 137 of the feed-dog-carrying bar to effect vertical movements of the feed-dog. Y

, 138 represents an oscillating loop-taker provided with a thread-case 139 and driven by the loop-taker driver110, the latter having formed integral with it a shaft 141 carrying a crank-arm 112 provided with a slideblock 143 which coacts with a forked arm 1414 carried by a rock-shaft 14:5 mounted in a bearing formed in a bracket 1 16 depending from the under side of the bed-plate. The rock-shaft 145 is provided with a crankarm 1 17 suitably connected with one end of a connecting rod 148 whose opposite end is connected with a crank-disk149 secured on the lowerend of an upright shaft 150, the

. .1. In a sewing machine, the combination with a reciprocating and laterally jogg ng needle, and a feeding mechanism engag ng 6 upper end of which is connected by suitable Having thus set forth the nature of the the under surface of the fabric being actedupon, of a presser-foot and feeding foot enfor efi'ectinga feedmovement ofsaid feedlet I gaging the fabric at; its upper side, means ing foot for each stitch-forming operation,

and controlling means for raising said Presser-foot off the fabric only at each alternate stitch-forming operation, and while. the needle is in the fabric. l

' 2. In a sewing machine, the combination -with a, reciprocating and-laterally jogging needle for effecting edge and depth stitches,

and a feeding mechanism engaging the 'un-' der surface of the fabric being acted upon,

of a presser-foot and feeding foot engag ing the fabric at its upperside, means for effecting a feedmovenient of said'feeding foot for each stitch-forming operation, and controlling means, for raising said presserfoot off. the fabric only when forming a depth stitch,'.and while the needle is in the fabric,

' 3. In a sewing machine, the combination witha jogging needle-bar frame provided with a reciprocating needle-carrying bar,

and a feeding mechanism engaging the under surface of the fabric being acted upon,

of a presser-foot and feeding foot engag-' ing the fabric at its upper side, means for effecting a feed movement of sald feeding foot for-eachstitch-forming operation, and

controlling ;means including the jogging needle-bar frame for raising said presser foot off the fabric only at each alternate stitch-forming operation, and while the needle is in the fabric.-

1. In a sewing machine, the combination with-a main shaft, a jogging needle-bar frame provided with a reciprocating needleca-rrying bar, anda feeding mechanism engaging the unden surface of the fabric being acted upon,of a presser-foot and feed ing. foot engaging the fabric at its upper side, means including a cam carried by said c 1 t main shaft for effecting a feed movement of said feeding foot for each stitch=forming operation, and controlling means including the jogging needle-bar frame for raising said presser-foot off the fabric only at each alternate stitch-forming-operation, and while the needle is in the fabric.

In a sewing machine, the combination. with a needle, a presser-foot having lifting and. lateral movements, a feeding 'foot, means for actuating said feeding foot, and means for giving to the needle reciprocating and laterallyjogging movements, of automatically actuated means for simultaneously lifting said feeding foot and presserfoot, and periodically actuated means for interrupting the lifting and lateral movements of said presser-foot for each alternate stitch. A

6. In a sewing machine, the combination with a reciprocating and laterally jogging rte resser-foot, of means for effecting a feed In testimony whereof, I have signed my movement of said feeding 11166113111511; for name to thls specification, 1n the presence of each stitch-forming operation, and controltwo subscribing witnesses.

ling means for raising said prcsser-foot ofi' ALBERT H. DE VOE. the fabric only at each alternate stitch-form- Witnesses: ing operation, and while the needle is in the H. A. KORNEMANN, J r.,

fabric. W. P. STEWART. 

